Isopropyl-substituted o-benzoquinones and oxanthrenequinones. Effect of steric shielding of alkyl substituents on reactivity
作者:T. N. Kocherova、N. O. Druzhkov、A. S. Shavyrin、M. V. Arsenyev、E. V. Baranov、V. A. Kuropatov、V. K. Cherkasov
DOI:10.1007/s11172-021-3167-6
日期:2021.5
sterically hindered di- and trisubstituted catechols and o-quinones by the reaction of catechol with isopropanol. Compared to sterically more hindered analogs, o-quinones bearing isopropyl substituents exhibit a higher reactivity toward the formation of oxanthrenequinone derivatives.
Late transition metal catalysts for olefin polymerization and oligomerization
申请人:Cherkasov Kuzunich Vladimir
公开号:US20060047094A1
公开(公告)日:2006-03-02
This invention relates to a transition metal compound represented by the formula LMX wherein M is a Group 3 to 11 metal L is a bulky bidentate or tridentate neutral ligand that is bonded to M by two or three heteroatoms and at least one heteroatom is nitrogen; X is a substituted or unsubstituted catecholate ligand provided that the substituted catecholate ligand does not contain a 1,2-diketone functionality.
Novel aminoglycosides, process for production thereof and use thereof
申请人:KOWA COMPANY, LTD.
公开号:EP0096392A1
公开(公告)日:1983-12-21
An aminoglycoside represented by the following formula (1)
wherein each of R, and R2 represents a hydrogen atom or a methyl group, R3 represents a hydrogen atom or an aminoacyl group, R4 represents a hydrogen atom or a hydroxyl or methoxy group, and R5 represents a hydrogen atom or a hydroxyl group, or a pharmaceutically acceptable acid addition salt thereof, a process for the production thereof and a pharmaceutical use thereof.
由下式(1)代表的氨基糖苷类化合物
其中 R 和 R2 各代表一个氢原子或一个甲基,R3 代表一个氢原子或一个氨基酰基,R4 代表一个氢原子或一个羟基或甲氧基,R5 代表一个氢原子或一个羟基,或其药学上可接受的酸加成盐,及其生产工艺和药物用途。
Mueller,E. et al., Zeitschrift fur Naturforschung. Teil B: Chemie, Biochemie, Biophysik, Biologie, 1963, vol. 18b, p. 1002 - 1009
作者:Mueller,E. et al.
DOI:——
日期:——
LATE TRANSITION METAL CATALYSTS FOR OLEFIN POLYMERIZATION AND OLIGOMERIZATION